package com.kaifamiao.N0802;

public class Test {
    public static void main(String[] args) {

        //U盘插入USB接口
        USBInterface udisk = new UDisk();
        udisk.service();

        //风扇插入USB接口
        USBInterface usbFAN = new UsbFan();
        usbFAN.service();
    }
}
